[mattpavelle]

I thought they just partner with Bing for ad results - not that their search was a skin of Bing. Wikipedia supports the ad partnership but also doesn't say anything about Bing being responsible for their search results. And on the few tests I've just done searching both, I see similar but not exact results. Do you have a source for this claim?

[ensignavenger]

Duck Duck Go uses search result API's from various venders, including Bing- that is mentioned in the history section of the Wikipedia article. (Originally they used Yahoo's search API, and Yahoo of course changed to using results from Bing). They also have their own web crawler.

[bla2]

See my reply to NeedMoreTea.